DAC7551

• Relative Accuracy (INL): ±0.35LSB
• Ultra-Low Glitch Energy: 0.1nV-s
• Low Power Operation: 100µA at 2.7V
• Power-On Reset to Zero Scale
• Power Supply: 2.7V to 5.5V Single Supply
• Power-Down: 0.05µA at 2.7V
• 12-Bit Linearity and Monotonicity
• Rail-to-Rail Voltage Output
• Settling Time: 5µs (Max)
• SPI-Compatible Serial Interface with Schmitt-Trigger Input: Up to 50MHz
• Daisy-Chain Capability
• Asynchronous Hardware Clear to Zero Scale
• Specified Temperature Range: -40°C to +105°C
• Small, 2 x 3 mm, 12-Lead SON Package
• APPLICATIONS
  • Portable, Battery-Powered Instruments
  • Digital Gain and Offset Adjustment
  • Programmable Voltage and Current Sources
  • Programmable Attenuators
  • Industrial Process Control

SPI, QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp..
All other trademarks are the property of their respective owners.

The DAC7551 is a single-channel, voltage-output digital-to-analog converter (DAC) with exceptional linearity and monotonicity, and a proprietary architecture that minimizes glitch energy. The low-power DAC7551 operates from a single 2.7V to 5.5V supply. The DAC7551 output amplifiers can drive a 2k, 200pF load rail-to-rail with 5µs settling time; the output range is set using an external voltage reference.

The 3-wire serial interface operates at clock rates up to 50MHz and is compatible with SPI™, QSPI™, Microwire™, and DSP interface standards. The parts incorporate a power-on-reset circuit to ensure that the DAC output powers up to 0V and remains there until a valid write cycle to the device takes place. The part contains a power-down feature that reduces the current consumption of the device to under 2µA.

Small size and low-power operation make the DAC7551 ideally suited for battery-operated, portable applications. The power consumption is typically 0.5mW at 5V, 0.23mW at 3V, and reduces to 1µW in power-down mode.

The DAC7551 is available in a 12-lead SON package and is specified over -40°C to +105°C.